Fluid placement of fixated scrubber sludge to reduce surface subsidence and to abate acid mine drainage in abandoned underground coal mines

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:257045

Meiers, R J ^[1]; Golden, D ^[2]; Gray, R ^[3]; Yu, W C

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1. Indianapolis Power and Light Co., IN (United States)
2. Electric Power Research Inst., Palo Alto, CA (United States)
3. GAI Consultants Inc., Monroeville, PA (United States)

Indianapolis Power and Light Company (IPL) began researching the use of fluid placement techniques of the fixated scrubber sludge (FSS) to reduce surface subsidence from underground coal mines to develop an economic alternative to low strength concrete grout. Abandoned underground coal mines surround property adjacent to IPL`s coal combustion by-product (CCBP) landfill at the Petersburg Generating Station. Landfill expansion into these areas is in question because of the high potential for sinkhole subsidence to develop. Sinkholes manifesting at the surface would put the integrity of a liner or runoff pond containment structure for a CCBP disposal facility at risk. The fluid placement techniques of the FSS as a subsidence abatement technology was demonstrated during an eight week period in September, October, and November 1994 at the Petersburg Generating Station. The success of this technology will be determined by the percentage of the mine void filled, strength of the FSS placed, and the overall effects on the hydrogeologic environment. The complete report for this project will be finalized in early 1996.

• OSTI ID: 257045
• Report Number(s): CONF-950952--
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
ABANDONED SHAFTS
BACKFILLING
BASELINE ECOLOGY
DEMONSTRATION PROGRAMS
FLY ASH
FOSSIL-FUEL POWER PLANTS
GROUND WATER
HYDRAULIC TRANSPORT
INDIANA
MONITORING
PHYSICAL PROPERTIES
SANITARY LANDFILLS
SLUDGES
UNDERGROUND DISPOSAL
UNDERGROUND MINING
WASTE PRODUCT UTILIZATION
WATER QUALITY